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how to fix the AC compressor not cycling in my Ford F-150 13th Generation (2015-2020) - Ford F-150
Home/Cars/Ford/F-150/13th Generation (2015-2020)/how to fix the AC compressor not cycling in my Ford F-150 13th Generation (2015-2020)

how to fix the AC compressor not cycling in my Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
544 words

Problem Statement

Learn how to diagnose and fix the AC compressor not cycling in your Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostics, and repair instructions.

Affected Component
HVAC
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical components.
  • •Allow the engine to cool before opening the hood and working on the AC system.

Symptoms

  • •AC system blowing warm air
  • •Compressor not engaging
  • •AC clutch not visibly spinning
  • •Increased cabin humidity
  • •Possible refrigerant leak noises

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •Manifold gauge set
  • •Multimeter
  • •Socket set
  • •Line wrench
  • •Torque wrench

Parts Required

  • •AC fuse (if blown)
  • •AC relay (if faulty)
  • •AC compressor (if defective)
  • •Refrigerant (as needed)

Additional Information

Affected Component
HVAC
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
5 items
Parts Required
4 items

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Solution
1. Preparation
  • Gather tools and parts needed.
  • Disconnect the battery to ensure safety during the repair.
  • Allow the engine to cool down if it has been running.
2. Check and Replace AC Fuse/Relay
  • Locate the fuse box under the dashboard or engine compartment.
  • Identify the AC fuse and relay using the fuse diagram.
  • Remove the fuse and test with a multimeter; replace if blown.
  • Test the relay by swapping it with a similar relay if available.
  • Reinstall the fuse and relay.
3. Inspect and Repair Wiring
  • Visually inspect the wiring harness leading to the AC compressor for damage or corrosion.
  • Disconnect the connector and check for continuity in the wires using a multimeter.
  • Repair or replace any damaged wires or connectors.
4. Test System Pressure
  • Connect the manifold gauge set to the low and high-side service ports.
  • Check the low-side pressure (should be between 25-45 psi).
  • If low, check for leaks and recharge the system as needed.
  • If high, check for a blockage or overcharge.
5. Replace the AC Compressor (if necessary)
  • If the compressor is not engaging after checks, it may need replacement.
  • Remove the serpentine belt by loosening the tensioner.
  • Disconnect the AC lines from the compressor (use a line wrench to avoid damage).
  • Unbolt the compressor from its mounting bracket.
  • Install the new compressor and reverse the steps to reconnect the lines and install the belt.
  • Recharge the AC system with the appropriate refrigerant.